CN110266341A - A kind of multidiameter delay transmission 4G communication system and its method - Google Patents
A kind of multidiameter delay transmission 4G communication system and its method Download PDFInfo
- Publication number
- CN110266341A CN110266341A CN201910553165.4A CN201910553165A CN110266341A CN 110266341 A CN110266341 A CN 110266341A CN 201910553165 A CN201910553165 A CN 201910553165A CN 110266341 A CN110266341 A CN 110266341A
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- frequency
- data
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention belongs to communication technique fields, transmit 4G communication system and its method more particularly, to a kind of multidiameter delay.Including be connected respectively with control unit signal input module, fundamental frequency processing unit, digital wideband Transmit-Receive Unit, carrier signal generator, spread frequency signal generator；Smart antenna unit is connected with digital wideband Transmit-Receive Unit.Carrier signal generator, spread frequency signal generator are connected with fundamental frequency processing unit respectively.By carrying out segment processing to multiple user signals, multistage transmission is then carried out by smart antenna, the speed for sending data can be greatly increased.In addition, load carrier signal and spread-spectrum signal by orthogonal modulation, can interfere with each other when greatly smaller multi-user communicates.It is individually communicated by multiple groups smart antenna unit, communication signal capacity, the adverse effect of smaller string number can be greatly increased.
Description
Technical field
The invention belongs to communication technique fields, transmit 4G communication system and its method more particularly, to a kind of multidiameter delay.
Background technique
Although 4G mechanics of communication is very universal at present, under multi-user's communication condition, it is of low quality to have a communication signal,
Especially when personnel are very intensive, the quality of signal is with regard to poor.There are a large amount of personnel seeing video download while a region
When file, can there are problems that Caton.In particular, the software capacity of software store is too big now, in the case that movie file is also very big,
Downloading and transmission speed are undesirable.
Summary of the invention
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
A kind of multidiameter delay transmission 4G communication system, its main feature is that, including,
Control unit, for controlling entire communication system operation；
Signal input module connects control unit, by control unit come incoming traffic signal；
Fundamental frequency processing unit, is connected with signal input module, is transmitted through the communication come letter for handling signal input module
Number；
Digital wideband Transmit-Receive Unit connects control unit, is used for the two-way communication between control unit；
Smart antenna unit is connect, for sending and receiving user communication signal with digital wideband Transmit-Receive Unit；
Carrier signal generator is connected with control unit and fundamental frequency processing unit, for that will input fundamental frequency processing unit
Communication signal be loaded into carrier signal, the use state of carrier signal generator is controlled and monitored by control unit；
Spread frequency signal generator is connected with control unit and fundamental frequency processing unit, for being loaded into carrier signal
Communication signal carry out frequency shift processing, the use state of spread frequency signal generator is controlled and monitored by control unit；
Control unit occurs with signal input module, fundamental frequency processing unit, digital wideband Transmit-Receive Unit, carrier signal respectively
Device, spread frequency signal generator are connected, for high-speed transfer of the communication control signal in each module.General communication signal is to guarantee
It is fast to transmit data speed, short range transmission is carried out using shortwave high-frequency signal between user and base station.By the way that communication signal is loaded
Long wave low frequency signal is generated to carrier signal generator, the central computer system telecommunication for base station and operator.
Spread-spectrum signal is generated by spread frequency signal generator, carrier signal is loaded into spread-spectrum signal, for being carried out to carrier signal
Pseudo Code Spread Spectrum avoids the interference of other users convenient for distinguishing the signal of different user.
Preferably, the fundamental frequency processing unit includes the signal integration module being sequentially connected, signal subsection module, modulation
Module, spread spectrum module, frequency-variable module, wherein signal integration Module connection signal input module, frequency-variable module connect control unit,
Carrier signal generator connects modulation module, and spread frequency signal generator connects spread spectrum module.Multi-user data is inputted by signal
Module generates serial initial data.Signal integration module is used to that serial initial data the operation such as to be packed to, be synthesized, and is formed
Serial multiplexing data.Multi-channel output is set in signal subsection module, and serial multiplexing data are become by single road transmission data
Data are transmitted at parallel duplex, then by the output end transmission of one line data on every road.Multiplex subchannel is set in modulation module, often
Subchannels include an output end, and every group of parallel duplex transmission data are first carried out orthogonal modulation by modulation module, then plus
It is downloaded in carrier signal, is operated and realized by orthogonal IFFT, become orthogonal frequency carrier wave per raw data symbols all the way after modulation
Signal.Spread spectrum module is used to for orthogonal frequency carrier signal being loaded into the spread-spectrum signal of spread frequency signal generator generation, and generation can
With jamproof orthogonal frequency multiple access carrier signal.Then by frequency-variable module, digital-to-analogue is carried out to orthogonal frequency multiple access carrier signal and is turned
Become, power amplification, the operations such as frequency multiplication transmitting become radiofrequency signal.
Preferably, postfilter is set in the frequency-variable module.By postfilter, for joining to equipment itself
Several signal waves are filtered, and reduce influence of the clutter to communication signal.
Preferably, multiplex subchannel is set in the modulation module, a signal multiplication is all set on every sub-channels
Device and output end；One signal multiplier is set in the spread spectrum module.By being set on sub-channels every in modulation module
Multiplier is set, for the parallel duplex transmission data on every road to be carried out orthogonal modulation in carrier signal.By in spread spectrum module
Signal multiplier is used to orthogonal frequency carrier signal and spread-spectrum signal carrying out orthogonal modulation, to generate the signal of strong anti-interference.
Preferably, symbol inserter is set in signal input module.By the symbol inserter in signal input module,
For carrying out insertion frequency pilot sign to user data, data are accurately integrated and are segmented convenient for the later period, so as to add
The processing and spread speed of fast signal.
Preferably, prefilter is set in the signal input module.It, can be to ring around by prefilter
Signal in border is filtered, and reduces data distortion.
Preferably, the digital wideband Transmit-Receive Unit and smart antenna unit have three groups or four groups.One group of smart antenna
Unit corresponds to set of number wideband Transmit-Receive Unit, and smart antenna unit is divided into three groups or four groups, and every group is responsible for an angular regions
Interior signal, all smart antenna units are collectively responsible for the user of 360 ° of annular regions.So that the capacity of system is bigger,
Data dissemination speed is faster.
Preferably, it is provided with number set weighter in each smart antenna unit, is used for different directions launching beam.It is each
A antenna is followed by a weighter, not only the amplitude of accommodation but also has adjusted phase.So that having airspace, temporal processing ability simultaneously.To
So that the capacity and speed of system processes data all use biggish raising.
Preferably, driving unit of the setting for direction calibration on the smart antenna unit.By driving unit, use
In carrying out real time calibration to smart antenna unit, anisotropy is avoided to influence laser propagation effect.
A kind of multidiameter delay transmission 4G means of communication, its step are as follows:
Step 1) data input: extraneous multi-user data is inputted by signal input module, and passes through built-in symbol
Inserter is inserted into symbol, to generate serial initial data；Processing convenient for the later period to data；
Step 2) Data Integration: serial initial data generates serial multiplexing data by signal integration module；For to string
The operation such as reason is packed, synthesized and reformed to row initial data, convenient for the segmentation in later period；
Step 3) Data Integration: serial multiplexing data generate parallel duplex by signal subsection module and transmit data；It will count
According to the data for being divided into multichannel, every circuit-switched data is exported by output end, can provide the transmission speed of data significantly；
Step 4) data modulation: parallel duplex transmission data are generated with the carrier signal of generation by modulation module orthogonal
Frequency carrier signal；The data on every road are subjected to orthogonal modulation with carrier signal respectively, then to the orthogonal demodulation signal on every road into
Row output, is greatly improved transmission speed；
Step 5) data spread spectrum: orthogonal frequency carrier signal and spread-spectrum signal generate orthogonal frequency multiple access by spread spectrum module and carry
Wave signal；The orthogonal frequency carrier signal on every road is loaded into spread-spectrum signal, the orthogonal multiple access carrier signal of multichannel is formed；
Step 6) data frequency conversion: orthogonal frequency multiple access carrier signal generates missile radiofrequency signal by frequency-variable module, then
The orthogonal multiple access carrier signal of multichannel is subjected to frequency conversion respectively, it is single to be then successively transferred to digital wideband transmitting-receiving by control unit
Member and smart antenna unit, by multiple electric wire unit transmitted in parallel in smart antenna unit, so as to provide transmission significantly
Speed.
The present invention has significant technical effect: by carrying out to multiple user signals due to using above technical scheme
Then segment processing carries out multistage transmission by smart antenna, can greatly increase the speed for sending data.In addition, by orthogonal
Modulation load carrier signal and spread-spectrum signal can interfere with each other when greatly smaller multi-user communicates.Pass through multiple groups intelligence day
Line unit individually communicates, and can greatly increase communication signal capacity, the adverse effect of smaller string number.
Detailed description of the invention
Fig. 1 is multi-path antenna 4G communication system schematic diagram of the present invention.
Fig. 2 is multi-path antenna 4G communication system control flow chart of the present invention.
Wherein, 1- control unit；2- signal input module；3- fundamental frequency processing unit；4- number wideband Transmit-Receive Unit；5- intelligence
It can antenna element；6- carrier signal generator；7- spread frequency signal generator；31- signal integration module；32- signal subsection module；
33- modulation module；34- spread spectrum module；35- frequency-variable module.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of multidiameter delay transmits 4G communication system, including, control unit 1, for controlling entire communication
System operation；Signal input module 2 connects control unit 1, by control unit 1 come incoming traffic signal；Fundamental frequency processing unit
3, it is connected with signal input module 2, is transmitted through the communication signal come for handling signal input module 2；Digital wideband transmitting-receiving is single
Member 4 connects control unit 1, is used for the two-way communication between control unit 1；Smart antenna unit 5 is received and dispatched single with digital wideband
Member 4 connects, for sending and receiving user communication signal；Carrier signal generator 6, with control unit 1 and fundamental frequency processing unit 3
It is connected, for the communication signal for inputting fundamental frequency processing unit 3 to be loaded into carrier signal, is controlled by control unit 1
With the use state of monitoring carrier signal generator 6；Spread frequency signal generator 7, with 3 phase of control unit 1 and fundamental frequency processing unit
Connection is controlled and is supervised by control unit 1 for carrying out frequency shift processing to the communication signal being loaded into carrier signal
Control the use state of spread frequency signal generator 7；Smart antenna unit 5 can be used for the Near Field Communication between user terminal and base station,
It can also be used in the telecommunication between base station and carrier server, or independent on the top of other smart antenna units 5
One antenna element is set and carrier server carries out telecommunication.Wherein, multiple groups smart antenna unit is set in system
5, every group of smart antenna unit 5 covers the subscriber signal in an angle, and all smart antenna units 5 collectively cover range and are
360 °, so as to comprehensive communication, each smart antenna unit 5 is served only for the user communication in institute's coverage area, works as user
When transregional, corresponding smart antenna unit 5 will be replaced and communicated with user.Subscriber signal successively pass through smart antenna unit 5,
Digital wideband Transmit-Receive Unit 4,1 entering signal input module 2 of control unit, then using 3 working process of fundamental frequency processing unit,
Generate multistage can high-speed transfer subsignal, then successively with carrier signal generator 6 generate carrier signal and spread-spectrum signal send out
The spread-spectrum signal orthogonal modulation that raw device 7 generates, generate it is high it is anti-interference can high-speed transfer orthogonal signalling, then pass through smart antenna
Unit 5 or individually antenna element and carrier server carry out telecommunication.
In the present embodiment, as shown in Figure 1, the fundamental frequency processing unit 3 include be sequentially connected signal integration module 31,
Signal subsection module 32, modulation module 33, spread spectrum module 34, frequency-variable module 35, wherein 31 connection signal of signal integration module is defeated
Enter module 2, frequency-variable module 35 connects control unit 1, and carrier signal generator 6 connects modulation module 33, spread frequency signal generator 7
Connect spread frequency signal generator 7.User communication signal passes sequentially through smart antenna unit 5, digital wideband Transmit-Receive Unit 4, control
Unit 1, signal input module 2, signal integration module 31, signal subsection module 32, modulation module 33, spread spectrum module 34, frequency conversion
After the processing of module 35.Then operator's clothes are sent to by control unit 1, digital wideband Transmit-Receive Unit 4, smart antenna unit 5
Business device, or carrier server is sent to by control unit 1, individual antenna element.It will by signal subsection module 32
Then each block signal is loaded into formation orthogonal frequency carrier signal in carrier signal by modulation module 33, so by signal subsection
Orthogonal frequency carrier signal is loaded into local spread-spectrum signal by spread spectrum module 34 afterwards, forms orthogonal frequency multiple access carrier signal.
To significantly increase the spread speed of signal.And anti-interference ability is reinforced.
In the present embodiment, postfilter is set in the frequency-variable module 35.Postfilter is used for system end, makees
Emit for the last time before signal transmitting and prepare, filters out internal clutter before transmission, advantageously reduce the shadow of unfavorable clutter
It rings, reduces distortion, on the other hand reduce the transmitting of hash, whole spread speed can be increased.
In the present embodiment, multiplex subchannel is set in the modulation module 33, a letter is all set on every sub-channels
Number multiplier and output end；One signal multiplier is set in the spread spectrum module 34.Multichannel built in modulation module 33 is defeated
Multiplier is arranged on each channel in outlet, distinguishes orthogonal modulation for each section of parallel duplex transmission data, forms multistage orthogonal frequency
Carrier signal, distortion when avoiding propagating.
In the present embodiment, symbol inserter is set in signal input module.Symbol inserter is used for the signal number that will be inputted
According to being handled again, quick response preparation is carried out for later period segmentation.
In the present embodiment, prefilter is set in the signal input module 2.Before prefilter is used for input
Signal be filtered, be mainly used for filter external environment in electromagnetic wave.
In the present embodiment, the digital wideband Transmit-Receive Unit 4 and smart antenna unit 5 have three groups or four groups.Multiple groups intelligence
Can antenna element 5 form aerial array, can user communication in comprehensive independence and various ranges, greatly increase the appearance of system
Amount, convenient between multi-user without the communication of interference.
In the present embodiment, it is provided with number set weighter in each smart antenna unit 5, is used for different directions transmitted wave
Beam.The number set independent comprehensive communication of weighter in every set smart antenna unit 5.
In the present embodiment, setting is used for the driving unit of direction calibration on the smart antenna unit 5.The driving
Unit is servo motor,.
In the present embodiment, as shown in Fig. 2, a kind of multidiameter delay transmits the 4G means of communication, its step are as follows:
Step 1) data input: extraneous multi-user data is inputted by signal input module 2, and passes through built-in symbol
Number inserter is inserted into symbol, to generate serial initial data；
Step 2) Data Integration: serial initial data generates serial multiplexing data by signal integration module 31；
Step 3) Data Integration: serial multiplexing data generate parallel duplex by signal subsection module 32 and transmit data；
Step 4) data modulation: parallel duplex transmits data and the carrier signal of generation is generated just by modulation module 33
Hand over frequency carrier signal；
Step 5) data spread spectrum: orthogonal frequency carrier signal and spread-spectrum signal pass through the generation orthogonal frequency multiple access of spread spectrum module 34
Carrier signal；
Step 6) data spread spectrum: orthogonal frequency multiple access carrier signal generates missile radiofrequency signal by frequency-variable module 35.
By the way that multi-user data first to be carried out to the filtering processing of early period, so that communication signal data is more acurrate, then logarithm
According to symbol insertion process is carried out, the serial initial data convenient for post-processing is obtained.Finally, by signal integration module carry out into
The processing such as row packaging, synthesis, framing, obtain serial multiplexing data；Then segment processing is carried out to data, obtains parallel duplex biography
Transmission of data；Orthogonal modulation finally is carried out to data, is loaded into carrier signal, orthogonal frequency carrier signal is formed, so that signal can
Remote transmission；Then spread processing is carried out to signal, forms the orthogonal frequency multiple access carrier signal with high anti-jamming capacity.So
Frequency-conversion processing is carried out to signal afterwards, forms missile radiofrequency signal.
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (10)
1. a kind of multidiameter delay transmits 4G communication system, it is characterised in that: including,
Control unit (1), for controlling entire communication system operation；
Signal input module (2) connects control unit (1), by control unit (1) come incoming traffic signal；
Fundamental frequency processing unit (3) is connected with signal input module (2), is transmitted through lead to for handling signal input module (2)
Interrogate signal；
Digital wideband Transmit-Receive Unit (4) connects control unit (1), is used for the two-way communication between control unit (1)；
Smart antenna unit (5) is connect, for sending and receiving user communication signal with digital wideband Transmit-Receive Unit (4)；
Carrier signal generator (6) is connected with control unit (1) and fundamental frequency processing unit (3), for that will input fundamental frequency processing
The communication signal of unit (3) is loaded into carrier signal, controls and monitor carrier signal generator by control unit (1)
(6) use state；
Spread frequency signal generator (7) is connected with control unit (1) and fundamental frequency processing unit (3), for be loaded into carrier wave letter
Communication signal in number carries out frequency shift processing, controls and monitor spread frequency signal generator (7) by control unit (1)
Use state.
2. a kind of multidiameter delay according to claim 1 transmits 4G communication system, it is characterised in that: the fundamental frequency processing
Unit (3) includes the signal integration module (31), signal subsection module (32), modulation module (33), spread spectrum module being sequentially connected
(34), frequency-variable module (35), wherein signal integration module (31) connection signal input module (2), frequency-variable module (35) connection are controlled
Unit (1) processed, carrier signal generator (6) connect modulation module (33), and spread frequency signal generator (7) connects frequency-variable module
(35)。
3. a kind of multidiameter delay according to claim 2 transmits 4G communication system, it is characterised in that: the frequency-variable module
(35) postfilter is set in.
4. a kind of multidiameter delay according to claim 2 transmits 4G communication system, it is characterised in that: the modulation module
(33) multiplex subchannel is set in, a signal multiplier and output end are all set on every sub-channels；The spread spectrum module
(34) signal multiplier is set in.
5. a kind of multidiameter delay according to claim 2 transmits 4G communication system, it is characterised in that: in signal input module
Symbol inserter is set.
6. a kind of multidiameter delay according to claim 1 or 2 transmits 4G communication system, it is characterised in that: the signal
Prefilter is set in input module (2).
7. a kind of multidiameter delay according to claim 1 or 2 transmits 4G communication system, it is characterised in that: the number
Wideband Transmit-Receive Unit (4) and smart antenna unit (5) have three groups or four groups.
8. a kind of multidiameter delay according to claim 3 transmits 4G communication system, it is characterised in that: each smart antenna list
It is provided with number set weighter in first (5), is used for different directions launching beam.
9. a kind of multidiameter delay according to claim 1 or 2 transmits 4G communication system, it is characterised in that: the intelligence
Setting is used for the driving unit of direction calibration on antenna element (5).
10. a kind of multidiameter delay according to claim 1 or 2 transmits the 4G means of communication, which is characterized in that its step is such as
Under:
Step 1) data input: extraneous multi-user data is inputted by signal input module (2), and passes through built-in symbol
Inserter is inserted into symbol, to generate serial initial data；
Step 2) Data Integration: serial initial data generates serial multiplexing data by signal integration module (31)；
Step 3) Data Integration: serial multiplexing data generate parallel duplex by signal subsection module (32) and transmit data；
Step 4) data modulation: it is orthogonal by modulation module (33) generation with the carrier signal of generation that parallel duplex transmits data
Frequency carrier signal；
Step 5) data spread spectrum: orthogonal frequency carrier signal and spread-spectrum signal generate orthogonal frequency multiple access by spread spectrum module (34) and carry
Wave signal；
Step 6) data frequency conversion: orthogonal frequency multiple access carrier signal generates missile radiofrequency signal by frequency-variable module (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553165.4A CN110266341A (en) | 2019-06-25 | 2019-06-25 | A kind of multidiameter delay transmission 4G communication system and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553165.4A CN110266341A (en) | 2019-06-25 | 2019-06-25 | A kind of multidiameter delay transmission 4G communication system and its method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110266341A true CN110266341A (en) | 2019-09-20 |
Family
ID=67921291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910553165.4A Pending CN110266341A (en) | 2019-06-25 | 2019-06-25 | A kind of multidiameter delay transmission 4G communication system and its method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110266341A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035104A (en) * | 2006-03-06 | 2007-09-12 | 华为技术有限公司 | Spread spectrum orthogonal frequency division multiplexing mixing system |
| CN101146084A (en) * | 2007-10-09 | 2008-03-19 | 北京交通大学 | Uplink transmission and receiving method for space domain multiplexing MIMO MC-CDMA system |
| CN101459458A (en) * | 2007-12-14 | 2009-06-17 | 株式会社Ntt都科摩 | Method for constructing unconstrained duplicate orthogonal code in CDMA system |
| CN101729134A (en) * | 2008-10-20 | 2010-06-09 | 中国科学院上海微系统与信息技术研究所 | Generalized multiple carrier frequency division multiple access transmission equipment based on orthogonal transformation processing |
-
2019
- 2019-06-25 CN CN201910553165.4A patent/CN110266341A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035104A (en) * | 2006-03-06 | 2007-09-12 | 华为技术有限公司 | Spread spectrum orthogonal frequency division multiplexing mixing system |
| CN101146084A (en) * | 2007-10-09 | 2008-03-19 | 北京交通大学 | Uplink transmission and receiving method for space domain multiplexing MIMO MC-CDMA system |
| CN101459458A (en) * | 2007-12-14 | 2009-06-17 | 株式会社Ntt都科摩 | Method for constructing unconstrained duplicate orthogonal code in CDMA system |
| CN101729134A (en) * | 2008-10-20 | 2010-06-09 | 中国科学院上海微系统与信息技术研究所 | Generalized multiple carrier frequency division multiple access transmission equipment based on orthogonal transformation processing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105322980B (en) | Alien frequencies band carrier aggregation signal method of sending and receiving and its device | |
| CN1072861C (en) | Multi-channel digital transceiver and method thereof | |
| CN106464626B (en) | Data transmission method and device between baseband unit BBU and remote radio unit RRU | |
| CN103888180B (en) | Carrier aggregation receiving device, transmitting device and transmitting-receiving device | |
| CN102362453A (en) | Wireless transmission method, wireless transmission system, and transmission apparatus and reception apparatus of wireless transmission system | |
| CN108604920B (en) | Communication system with distributed receiver architecture | |
| CN105119629B (en) | Co-channel full duplex terminal and system simultaneously | |
| WO2004077730A3 (en) | Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation | |
| CN104092526B (en) | Multi-carrier communicating method and device for TDD mode MIMO wireless communicating system | |
| CN102089991A (en) | Multi-band data transmission method | |
| CN102208940A (en) | Radio frequency system | |
| CN106877898B (en) | A kind of carrier wave polymerization processing circuit, signal processing method and electronic equipment | |
| CN109327230A (en) | A kind of method, apparatus and DAS system of digital analogue signal mixed transport | |
| CN104079522A (en) | Multi-carrier communication method and device of TDD mode MIMO wireless communication system | |
| CN106849971B (en) | A kind of multi-tap interference blanking unit and system | |
| CN110504984A (en) | A kind of electronic equipment | |
| CN110011691A (en) | Electronic equipment and communication means for electronic equipment | |
| CN104854795A (en) | Broadband signal receiving method and device, radio-frequency processing unit and broadband antenna | |
| CN106411331A (en) | Downlink carrier aggregation system and electronic device | |
| US20160066307A1 (en) | Mimo communication method and system | |
| CN110266341A (en) | A kind of multidiameter delay transmission 4G communication system and its method | |
| CN205901715U (en) | Dual -band dual antenna receiving and dispatching front end circuit system | |
| CN201467477U (en) | Cluster optical fiber coverage system and near-end machine thereof | |
| CN104639201B (en) | A kind of radio-frequency front-end of base station and base station | |
| CN111641487A (en) | Multi-channel high-frequency wireless data transmission method and system based on link aggregation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190920 |